my rule of thumb for 4x4 if you want a good one: mgc 4x4 if you want a good one and you have more money than me: aosu 4x4 if you dont have money but have small hands and still want a good cube: zhisu mini 4x4
As someone who used the meilong m 4x4 before switching to the Mgc, I did not feel the size affected me very much, though I have fairly small hands and 6x6s are very large, even larger than most in my hands.
Honestly, at this point you should never get a pop on a modern 4x4 and if you do it's a sure sign your cube is way too loose. If corner cutting 45 degrees is important to your turning sthyle then it's time to work on turning accurately. Other than that I love the video!
My MGC sucks and I hope the aosu is worth the money. I ordered it and stared the return process on the MGC. I’m not all that tuned into 4x4 but it started super slow, I loosened and lubed it, and tried to work with it for a good few solves to break it in. Everything online said I have to disassemble the whole thing and clean it. Not how something should start out. So I broke it in, loosened it to comfortable turning, and just when I thought it might kind of work, it popped. After putting it back together, and I was absolutely sure it was back together, 2 sides started turning like it was made of sandpaper. Garbage, garbage, garbage. I hope whoever gets it, that it works out for them, but man this is the worst cube I’ve ever bought.